Lock-washer.



J. W. ALBIN.

LOCK WASHER.

APPLICATION FILED DBO. s, 1913.

1,103,337. Patenfied July 14,1914;

nu pnmi 'rml fa WITNESSES A44 ATTORNEY (Ht rvuums PETERS (30..PHOTO-LI'IHQ. WASHINGIUN, u. u.

Wren srarns PATENT orrroni.

JEREMIAH W. ALBIN, OF BABYLUN, NEW YORK.

LOCK-WASHER,

meanest.

Application filed December 3, 1913.

To all whom it may concern Be it known that I, JEREMIAH XV; ALBIN, acitizen of the United States, and resident of Babylon, in the county ofSuffolk and State of New York, have invented certaln new and usefulImprovements in Lock-Washers, of which the following is aspecification.

This invention relates to lock washers for the nuts of bolts and likepurposes, and has for its object to construct such an article 1n anextremely simple and inexpensive manner; to provide a complete andefficient lock that will hold the nut securely in place againstaccidental displacement by reason of shocks or vibrations; that willcause no injury to bolt or nut while in use, and which may be usedrepeatedly; and which may also be easily and quickly unlocked andremoved from a bolt or other article. These and other objects of myinvention are described in the following specification and shown in theannexed drawings, the particular features of novelty constituting myinvention being pointed out in the claims at the end of thisspecification.

In the drawings, which form a part of this specification, and in whichsimilar letters and figures of reference refer to correspond ing partswherever they occur: Figure 1 is a central longitudianl section of abolt and nut provided with my lock washer; Fig. 2 is a side elevationpartly in section showing the parts somewhat separated and the locklatch raised; Fig. 3 is an end elevation of the bolt and parts; andFigs. 4 and 5 are respectively a sectional view, and a front elevationof the lock washer.

1 indicates a bolt, and 2 a nut, both of which may be of any usual ordesired form or construction.

is my lock washer, which consists of a plate which has an inclinedcentral bore 4 passing through it, said bore being made slightly largerthan the diameter of the bolt upon which it is used, so that said platemay he slipped on to the bolt, and fit the bolt snugly at all pointsaround its circumference.

As shown in Fig. 2, the washer 3 when placed upon a bolt, because of itsinclined bore 4, normally assumes an oblique position thereon, or inother words rests in an inclined plane with respect to the longitudinalplane of the bolt upon which it is used, so that when the nut 2 isscrewed on the bolt, it will first engage the side 5 of the washer,

Specification of Letters Patent.

Patented July 14, 1914.

Serial No. 804,398.

and, as the turning of the nut is continued, the pressure of the nut onthe side of the washer will cause the latter to gradually assume aposition parallel to the nut, causing the walls of the bore 4: to becomejammed and firmly fixed in the threads of the bolt. The bore 4 of thewasher may be provided with ribs 6, or be otherwise roughened so that itwill firmly grip, the bolt, but this is not absolutely necessary.

. I provide one of the faces, 5, of the washer, with a transverse groove8, and pivot one end 10 of abent spring latch 9 to the washer inposition so that it may be sprung into the groove 8, which will act as akeeper. When in this position the central part 12 of the latch 9projects outwardly from the side of the washer and across the washer infront of the bore 4, in position to engage a. side 11 of the nut 2, andprevent it from turning on the bolt.

In operation, the latch 9 is thrown out of the groove 8 while the nut 2is being screwed against the Washer, and then the latch is sprung intothe keeper groove 8, the part 12 of the latch pressing firmly againstthe side 11 of the nut. It should be observed that the force necessaryto throw the washer into a parallel position to the nut is so great thatthe walls of the bore of the washer are jammed into locking engagementwith the threads of the bolt, while at the same time a ground joint isformed between the washer and the nut, so that all these parts are verysecurely locked together by this operation alone. Then the spring latch,however, is brought into enga ement with one side of the nut, and isthen sprung into engagement with the keeper groove, the nut ispositively locked in its working position, and cannot be moved on thebolt by shocks or vibrations.

I have found that the latch 9 may be conveniently made of spring wire,such as piano wire.

Having now described my invention what I claim as new and desire tosecure by Letters Patent is: r

1. A look washer having an inclined bore, adapted to receive a bolt, andto be thrown into locking engagement therewith as a nut is screwed intoworking position against the Washer.

2. A look washer having an inclined central bore, a swinging latchsecured to said washer, and means for holding said latch when it is in aclosed position.

3. A lock washer having an inclined bore, a swinging latch, and a grooveadapted to receive said latch, and to hold the samein a closed position.7

4:. A lock washer having an inclined bore, a pivoted spring latch, and agroove adapted to receive said latch and to hold a closed position.

5. A look washer comprising a flat plate having a central inclined bore,a spring latch pivotally secured to said plate at one side of said looreand means for holding said latch in a closed position across said Washerin front ofsaid bore.

the same in said bore, and means for locking said washer to a nut whenthe latter is screwed into engagement with said Washer.

7. A lock Washer having an inclined bore, said bore having depressionsformed therein forming teeth extending longitudinally through saidloore, and means for locking said Washer to a nut when the latter isscrewed into engagement with said Washer.

Signed at New York, in the county of New York and State of New York this23rd day of October, A. D. 1913.

p JEREMIAH W. ALBIN.

l/Vitnesses:

GRACE M. CLARK, WILLIAM E. RICHARDS.

Copies ot'this patent may be obtained for five cents each, by addressingthe Commissioner .of Patents,

a Washington, D. O.

